<template>
  <el-card class="box-card">
    <div slot="header" class="clearfix">
      <span>重置密码</span>
    </div>
    <!-- 表单 -->
    <el-form :model="pwdForm" :rules="pwdFormRules" ref="pwdForm" label-width="100px">
      <el-form-item label="原密码" prop="old_pwd" minlength="6" maxlength="15">
        <el-input v-model="pwdForm.old_pwd" type="password"></el-input>
      </el-form-item>
      <el-form-item label="新密码" prop="new_pwd">
        <el-input v-model="pwdForm.new_pwd" type="password"></el-input>
      </el-form-item>
      <el-form-item label="确认新密码" prop="re_pwd">
        <el-input v-model="pwdForm.re_pwd" type="password"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="updataPwd">修改密码</el-button>
        <el-button @click="$refs.pwdForm.resetFields()">重置</el-button>
      </el-form-item>
    </el-form>
  </el-card>
</template>

<script>
export default {
  name: 'UserPwd',
  data() {
    /*
      rule: 校验规则
      value：需要输入的校验对象
      callback：回调函数 必须调用
    */
    const checkOldPwd = (rule, value, callback) => {
      if (value !== this.pwdForm.old_pwd) {
        return callback(new Error('密码错误'))
      }
      callback()
    }
    const checkNewPwd = (rule, value, callback) => {
      if (value === this.pwdForm.old_pwd) {
        return callback(new Error('新旧密码不能相同'))
      }
      callback()
    }

    const checkRePwd = (rule, value, callback) => {
      if (value !== this.pwdForm.new_pwd) {
        return callback(new Error('重新输入的密码需要相同'))
      }
      callback()
    }
    return {
      // 表单的数据对象
      pwdForm: {
        old_pwd: '',
        new_pwd: '',
        re_pwd: ''
      },
      // 表单的验证规则对象
      pwdFormRules: {
        old_pwd: [
          // {required: true, message: '', trigger: 'blur'}
          { required: true, message: '请输入密码', trigger: 'blur' },
          { pattern: /^\S{6,15}$/, message: '密码长度必须是6-15位的非空字符串', trigger: 'blur' },
          { validator: checkOldPwd, trigger: 'blur' }
        ],
        new_pwd: [
          { required: true, message: '请输入新密码', trigger: 'blur' },
          { pattern: /^\S{6,15}$/, message: '密码长度必须是6-15位的非空字符串', trigger: 'blur' },
          // 自定义校验
          { validator: checkNewPwd, trigger: 'blur' }
        ],
        re_pwd: [
          { required: true, message: '请再次确认新密码', trigger: 'blur' },
          { pattern: /^\S{6,15}$/, message: '密码长度必须是6-15位的非空字符串', trigger: 'blur' },
          { validator: checkRePwd, trigger: 'blur' }
        ]
      }

    }
  },
  methods: {
    updataPwd() {
      // 1.兜底校验
      this.$refs.pwdForm.validate(async(valid) => {
        if (!valid) return
        // 2.发送请求
        const { data: res } = await this.$axios.patch('/my/updatepwd', this.pwdForm)
        // console.log(res)
        // 3.用户提示
        if (res.code !== 0) return this.$message.error('更新密码失败')
        this.$message.success('更新密码成功')
        // 4.提交后输入框重置
        this.$refs.pwdForm.resetFields()
        // 5.返回重新登录
        this.$store.commit('user/updateToken', '')
        this.$router.push('/login')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.el-form {
  width: 500px;
}
</style>
